In addition to ground mounted signs as permitted under this chapter, one interstate ground mounted sign shall be allowed on lots or tracts under single ownership, management or control, provided the following conditions are met:
A. Monolithic or Columnar Line: Interstate signs shall have a monolithic or columnar line that maintains essentially the same profile from grade to top.
B. Sign Area: The total area of a sign shall be actual square footage of one sign face. Double face signs may be permitted with the maximum square footage permitted on each side. The area of one sign face shall equal one square foot per linear foot of interstate ROW frontage. The maximum size of an interstate sign shall be one hundred fifty (150) square feet.
C. Tract Frontage: The tract must have frontage abutting the interstate ROW, or be within three hundred feet (300') of the interstate ROW. See figure 11-12-8A of this subsection for a graphic representation of the properties granted an interstate ground mounted sign.
D . Height: The maximum height of an interstate sign shall be thirty feet (30') above the interstate road grade. See figure 11-12-8B of this subsection.
E. Location: An interstate ground mounted sign must be located within fifty feet (50') of the interstate or interstate ramp ROW, or in the event that the interstate ground mounted sign is located on a parcel that does not have direct interstate frontage, the interstate ground mounted sign must be positioned adjacent to the nearest interstate ROW abutting property line.
F. Setback: Minimum interstate sign setback shall be five feet (5'). In the event that the interstate ground mounted sign is located on a parcel that does not have direct interstate frontage, the interstate ground mounted sign must be set back at least equal to the overall height of the sign.
G. Distance from Other Signs: An interstate ground mounted sign must be at least one hundred feet (100') from any other such interstate ground mounted sign, or other ground mounted sign.
H. Permits: In addition to the permitting requirements of this chapter, all applicable interstate ground mounted signs must obtain any necessary permits or licenses from the Iowa Department of Transportation. (Ord. 1099, 4-8-2021)